Zhang Yan, Chen YanKun, Zhou JianPing, Sun DaQian, Li HongMei
School of Mechanical Engineering, Xinjiang University, Wulumuqi, 830000, China.
State Key Laboratory for Manufacturing Systems Engineering, Xian, 710000, China.
Sci Rep. 2021 Oct 28;11(1):21251. doi: 10.1038/s41598-021-00815-4.
In this paper, laser welding-brazing of TC4 Titanium (Ti) alloy and AlO ceramic dissimilar material was carried. The results showed that the Ti alloy and AlO were joined by melting filler metal when the laser was concentrated in the Ti alloy side of the joint. The joint with one fusion weld and one brazed weld separated by remaining unmelted Ti alloy. Laser beam offset the Ti alloy 1.5 mm, Ti alloy would not be completely melted in joint. Through heat conduction, the filler metal melted occurred at the Ti-ceramic interface. A brazed weld was formed at the Ti-ceramic interface with the main microstructure of β-CuZn + TiZn, β-CuZn and AlCu + β-CuZn. The joint fractured at the brazed weld with the maximum tensile strength of 169 MPa.
本文对TC4钛（Ti）合金与AlO陶瓷异种材料进行了激光熔焊-钎焊。结果表明，当激光聚焦在接头的钛合金一侧时，钛合金与AlO通过熔化填充金属连接在一起。接头由一条熔焊缝和一条钎焊缝组成，中间隔着未熔化的钛合金。激光束使钛合金偏移1.5毫米时，钛合金在接头中不会完全熔化。通过热传导，填充金属在钛-陶瓷界面处熔化。在钛-陶瓷界面形成了一条钎焊缝，其主要微观结构为β-CuZn+TiZn、β-CuZn和AlCu+β-CuZn。接头在钎焊缝处断裂，最大抗拉强度为169兆帕。
